---
description: >-
  This section describes how to perform same checks on multiple texts at same
  time.
---

# Collection Extensions

### Overview

In **EasyValidation,** you can not only [perform multiple validations](https://wajahatkarim.gitbook.io/easyvalidation/usage/multiple-validation-checks) on same text, but you can also perform same validation on multiple text streams at same time by using [Collection Extensions](#list-of-collection-extensions). For example, you are taking a guest invite list of email addresses, and you have to see that all the texts are valid email addresses. Then you can do it like this:

```kotlin
var emailList = listOf("email1@domain.com", "email2@dom.com", "em3@ga.com")

// You can pass any collection via spread operator
var allValid = validEmailList(*emailList, { str, msg ->
    // The str is an invalid text. The msg contains the message here.
})

// Or you can pass any number of arguments directly
var allValid2 = validEmailList("em@gma.com", "te@st.com", "23ss@", { str, msg ->
    // The str is the invalid text. The msg contains the message here.
})
```

### List of Collection Extensions

The Collection extension methods' names are same as the [extension methods](../validation-using-extension-methods#list-of-extension-methods) names followed by `List` keyword. For example, `validEmail()` becomes `validEmailList()` and so on. These methods accept `varargs` parameter for multiple texts and an error callback method. Here's list of all the collection extension methods.

| Method                              | Description                                                                                                                                                                 |
| ----------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `nonEmptyList()`                    | Returns `true` if the text is not empty. And returns `false` if text is empty.                                                                                              |
| `minLengthList()`                   | Returns `false` if the length of text is less than given minimum length.                                                                                                    |
| `maxLengthList()`                   | Returns `false` if text length is greater than given length                                                                                                                 |
| `validEmailList()`                  | Returns `true` if text is a valid email address.                                                                                                                            |
| `validNumberList()`                 | Returns `true` if the text is any valid number                                                                                                                              |
| `greaterThanList()`                 | Returns `false` if the text is number less than the given target number                                                                                                     |
| `greaterThanOrEqualList()`          | Returns `false` if the text is number less than or equal to the given target number                                                                                         |
| `lessThanList()`                    | Returns `false` if the text is number greater than the given target number                                                                                                  |
| `lessThanOrEqaulList()`             | Returns `false` if the text is number greater than or equal to the given target number                                                                                      |
| `numberEqualToList()`               | Returns `false` if the text is a valid number and equal to the given target number                                                                                          |
| `allUperCaseList()`                 | Returns `false` if at least one or more characters are lower case                                                                                                           |
| `allLowerCaseList()`                | Returns `false` if at least one or more characters are upper case                                                                                                           |
| `atleastOneUperCaseList()`          | Returns `true` if at least one or more characters are upper case                                                                                                            |
| `atleastOneLowerCaseList()`         | Returns `true` if at least one or more characters are lower case                                                                                                            |
| `atleastOneNumberList()`            | Returns `true` if at least one or more characters are numbers                                                                                                               |
| `startWithNumberList()`             | Returns `true` if text starts with any number                                                                                                                               |
| `startWithNonNumberList()`          | Returns `false` if text starts with any number                                                                                                                              |
| `noNumbersList()`                   | Returns `false` if the text any number or digit.                                                                                                                            |
| `onlyNumbersList()`                 | Returns `false` if text contains any alphabetic character                                                                                                                   |
| `noSpecialCharactersList()`         | Returns `true` if text contain no special characters                                                                                                                        |
| `atleastOneSpecialCharactersList()` | Returns `true` if text contain at least one special characters                                                                                                              |
| `textEqaulToList()`                 | Returns `false` if the text is not equal to the given text                                                                                                                  |
| `textNotEqualToList()`              | Returns `true` if the text is not equal to the given text                                                                                                                   |
| `startsWithList()`                  | Returns `true` if the text starts with the given text                                                                                                                       |
| `endsWithList()`                    | Returns `true` if the text ends with the given text                                                                                                                         |
| `containsList()`                    | Returns `true` if the text contains the given text                                                                                                                          |
| `notContainsList()`                 | Returns `false` if the text contains the given text                                                                                                                         |
| `creditCardNumberList()`            | Returns `true` if the text is valid credit card number. This supports Visa, Master Card, American Express, Diners Club, Discover, and JCB.                                  |
| `creditCardNumberWithSpacesList()`  | Returns `true` if the text is valid credit card number with spaces between 4 characters. This supports Visa, Master Card, American Express, Diners Club, Discover and JCB.  |
| `creditCardNumberWithDashesList()`  | Returns `true` if the text is valid credit card number with dashes between 4 characters. This supports Visa, Master Card, American Express, Diners Club, Discover, and JCB. |
| `validUrlList()`                    | Returns `true` if the text is a valid URL                                                                                                                                   |
| `regexList()`                       | Returns `true` if the text matches passed `RegEx` pattern.                                                                                                                  |
